/Engine/Source/Runtime/Landscape/Public/LandscapeEdit.h
Implementation for fixed array.
void GetHeightDataFast ( const int32 X1, const int32 Y1, const int32 X2, const int32 Y2, uint16 * Data, int32 Stride, uint16 * NormalData, [UTexture2D](API\Runtime\Engine\Engine\UTexture2D) * InHeightmap )